How to Increase Milk Supply While Pregnant and Breastfeeding

Posted on February 16, 2026

Introduction
The Reality of Milk Supply During Pregnancy
Can You Increase Supply While Pregnant?
Nutritional Support for the "Trio"
Hydration and Lactation Drinks
Managing Nipple Sensitivity and Discomfort
Safe Supplements and Lactation Treats
Monitoring the Nursing Child's Growth
The Power of Rest and Stress Management
Preparing for the Transition to Tandem Nursing
Action Plan for Increasing Support
Conclusion
FAQ

Introduction

Finding out you are pregnant while still nursing your older child can bring up a whirlwind of emotions. You might feel a surge of excitement followed quickly by a million questions about how your body will keep up. Many parents worry that milk supply will vanish or that nursing during pregnancy might take vital nutrients away from the new baby. We want you to know right away that breastfeeding while pregnant—often called "nursing through"—is a beautiful way to maintain a bond with your child while your family grows. If you want a deeper look at the basics, our guide on breastfeeding while pregnant walks through the safety and practical considerations.

At Milky Mama, we believe every drop counts and every parent deserves compassionate, evidence-based support. Whether you are nursing a toddler or a younger infant, navigating the changes in your milk supply requires a blend of physical care and realistic expectations. In this guide, we will explore the science of how pregnancy affects lactation and the most effective ways to support your supply during this unique season.

Maintaining your milk supply while pregnant is different than boosting supply in the early weeks postpartum because your body is now balancing two incredible tasks at once. Our goal is to empower you with the tools to nourish both of your children while prioritizing your own wellness.

The Reality of Milk Supply During Pregnancy

It is very common for milk supply to decrease during pregnancy, and for many parents, this is the first sign that they are expecting. Unlike the early days of breastfeeding where supply is driven primarily by "supply and demand," pregnancy introduces a powerful hormonal shift that changes the rules.

Around the fourth or fifth month of pregnancy, most parents notice a significant dip in volume. This happens because the high levels of estrogen and progesterone required to maintain a healthy pregnancy naturally "downregulate" milk production. While frequent nursing or pumping can help support what you have, it may not override these hormonal signals entirely.

It is also important to understand the shift to colostrum. Around mid-pregnancy, your body begins transitioning from mature milk back to colostrum (the nutrient-rich "liquid gold" full of antibodies). This is nature’s way of preparing for the newborn. Colostrum is thicker and produced in smaller quantities, which may lead your older child to nurse more frequently or, in some cases, begin the weaning process on their own. If you want more on that transition, our article on tandem nursing is a helpful next step.

Key Takeaway: A dip in milk supply during pregnancy is a normal, physiological response to rising hormones and does not mean your body is failing.

Can You Increase Supply While Pregnant?

When you are not pregnant, the best way to increase supply is to remove milk more often. During pregnancy, however, the "demand" part of the equation has a harder time competing with the "hormonal" part. This can be frustrating if you are used to seeing a quick boost after a power-pumping session or an extra nursing session.

While you may not be able to return to your pre-pregnancy volumes, you can certainly take steps to maintain your current supply and ensure your body has the resources it needs to produce as much as possible. Success in this area is less about "tricking" your body into making more and more about removing the obstacles that might cause an even deeper drop. If you want more practical strategies, our guide on supporting your milk supply while pregnant goes into the details.

Why Traditional Methods May Feel Different

Many parents find that power pumping or herbal support doesn't yield the same results during the second and third trimesters. This is because the mammary tissue is undergoing changes to prepare for the new baby. However, staying consistent with milk removal still signals to your body that the "nursing relationship" is active, which can make the transition to tandem nursing much easier after birth. If you’re also pumping, our how to increase milk supply with pumping guide is a useful companion resource.

Nutritional Support for the "Trio"

When you are breastfeeding while pregnant, your body is nourishing three people: you, your nursing child, and your developing baby. This requires a significant increase in caloric and nutrient intake. On average, you may need an additional 500 to 800 calories per day depending on the age of your nursing child and how often they are feeding.

Focus on Nutrient Density

It isn't just about the number of calories, but where they come from. Your body will prioritize the developing fetus and the milk for your nursing child, which can leave you feeling depleted if you aren't careful.

Protein: This is the building block of growth. Aim for an extra serving of high-quality protein each day, such as eggs, lean meats, beans, or Greek yogurt.
Calcium: During pregnancy and lactation, your body becomes more efficient at absorbing calcium. However, it is still vital to include calcium-rich foods like leafy greens, almonds, and fortified dairy to protect your bone density.
Healthy Fats: Omega-3 fatty acids, particularly DHA, are essential for your baby’s brain development and can support the quality of your breast milk.

Managing Morning Sickness

Nausea can make it incredibly difficult to eat enough to support your supply. If you are struggling to keep food down, try eating small, frequent "mini-meals" instead of three large ones. High-protein snacks like nuts or cheese can be easier to tolerate than heavy meals. If nursing triggers your nausea (which can happen due to the oxytocin release), keep some dry crackers nearby to nibble on during the session.

Hydration and Lactation Drinks

Staying hydrated is one of the most critical factors in maintaining milk supply, especially when your body is producing extra blood volume for pregnancy. Dehydration can lead to an immediate dip in milk volume and can also contribute to pregnancy fatigue and Braxton Hicks contractions.

We recommend drinking to thirst, but many parents find they need significantly more water than usual. If plain water feels boring or contributes to your nausea, lactation-specific hydration can be a great alternative. Our Pumpin' Punch™ drink mix is a refreshing way to get your fluids in while giving your body an extra boost.

What to do next:

Keep a 32-ounce water bottle with you at all times.

Aim for pale yellow urine as a sign of good hydration.

Add electrolytes if you are sweating or feeling particularly lightheaded.

Managing Nipple Sensitivity and Discomfort

One of the biggest hurdles to maintaining supply while pregnant isn't the milk volume itself, but the physical discomfort of nursing. Hormonal changes, specifically the rise in estrogen, can make your nipples extremely sensitive or even painful.

Tips for Comfortable Nursing

If nursing becomes painful, it can lead to "nursing aversion"—a feeling of agitation or the urge to unlatch the child. This is a very common and valid experience. To manage this:

Check the latch: Even an older child who has nursed for years might need a tune-up if your breast tissue is changing.
Shorten sessions: You don't have to nurse for 20 minutes to maintain the bond. Sometimes five minutes of focused connection is enough.
Use cold compresses: Applying something cool to your nipples after a session can help soothe the sensitivity.

Positioning for the Bump

As your pregnancy progresses, your growing belly might make your usual nursing positions uncomfortable. You may need to switch to a side-lying position or use more pillows to support the weight of your older child so they aren't leaning directly on your stomach.

Safe Supplements and Lactation Treats

Many parents look for supplements to help support their supply, but you must be cautious during pregnancy. Some herbs that are commonly used to support lactation should be discussed with your healthcare provider first.

We always recommend focusing on food-based support first. Oats, brewer's yeast, and flaxseed are classic ingredients that are generally considered safe and nourishing. Our Emergency Lactation Brownies are a favorite for many of our Mamas because they are packed with these supportive ingredients and provide a much-needed calorie boost in a delicious way. You can also browse more options in our lactation snacks collection.

A Note on Herbal Supplements

Before starting any herbal lactation supplement while pregnant, it is essential to consult with your healthcare provider or a certified lactation consultant. Our Milk Goddess™ supplement and other products in the lactation supplements collection may be helpful for some nursing parents, but your doctor should always give the final okay during pregnancy.

This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.

Monitoring the Nursing Child's Growth

The most important factor when you are trying to increase or maintain milk supply while pregnant is the age of your nursing child.

If Your Child is Under One Year

If you are nursing an infant who relies on your milk as their primary source of nutrition, a supply drop can be more serious.

Weight Checks: Schedule regular weight checks with your pediatrician to ensure they are staying on their growth curve.
Diaper Count: Watch for at least six wet diapers in a 24-hour period.
Supplementing: If your supply drops significantly and your baby is under six months, you may need to supplement with donor milk or formula. If they are over six months, you may be able to increase their intake of nutrient-dense solid foods, but always check with your doctor first.

If Your Child is a Toddler

For toddlers, breastfeeding is often more about comfort and immune support than total calories. If they are eating a wide variety of solid foods and drinking water, a dip in your supply is usually not a nutritional concern. They may choose to dry nurse for the comfort, or they may naturally transition to nursing only once or twice a day.

The Power of Rest and Stress Management

It sounds simple, but rest is one of the most effective ways to support your body's ability to produce milk. Fatigue is a major side effect of pregnancy, and when you add the energy requirements of breastfeeding on top of it, your body is working overtime.

High stress levels can inhibit the let-down reflex (the process where milk is released from the breast). When you are stressed, your body produces adrenaline, which can temporarily block oxytocin. Finding moments for deep breathing, skin-to-skin contact with your nursing child, or even a short nap can help your milk flow more easily.

Key Takeaway: You cannot pour from an empty cup. Prioritizing your sleep and mental health is a direct investment in your milk supply.

Preparing for the Transition to Tandem Nursing

If you choose to continue breastfeeding throughout your pregnancy, you are setting the stage for tandem nursing. Once your new baby arrives, your milk supply will naturally increase again. This is because the delivery of the placenta triggers a massive hormonal shift that signals your milk to come in.

Many parents find that having an older child who is already a pro at nursing can actually help manage the initial oversupply or engorgement that often happens after birth. Your older child can help relieve pressure, while your newborn gets the colostrum they need.

Will There Be Enough for the Baby?

This is the number one fear for pregnant nursing parents. Rest assured, your body is designed to prioritize the newborn. Your breasts will produce colostrum specifically for the new baby, and the act of both children nursing will signal your body to produce enough milk for both. The supply and demand system will be in full swing once the pregnancy hormones are gone.

If you want more support as you prepare, our Certified Lactation Consultant Breastfeeding Help page is a great place to start, and our Breastfeeding 101 course can also help refresh the basics.

Action Plan for Increasing Support

If you are feeling overwhelmed, take it one step at a time with these simple actions:

Increase your daily water intake by at least 16–24 ounces.
Add a high-protein snack to your afternoon routine.
Communicate with your partner or support system about your need for extra rest.
Consult a lactation professional if you have concerns about your child's growth or nipple pain.

Conclusion

Nursing through pregnancy is an incredible feat of the human body. While you may face a natural dip in supply due to shifting hormones, focusing on your nutrition, hydration, and rest can help you maintain a healthy nursing relationship. Remember that breastfeeding is about more than just the ounces produced; it is about the comfort, security, and love you provide to your child.

At Milky Mama, we are here to support you every step of the way, from pregnancy to tandem nursing and beyond. You are doing an amazing job balancing the needs of your growing family. Trust your body, listen to your cues, and don't hesitate to reach out for professional support when you need it. You can also connect with other parents in the Official Milky Mama Lactation Support Facebook Group when you want extra encouragement.

This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice.

FAQ

Is it safe to continue breastfeeding while I am pregnant?

For most healthy, low-risk pregnancies, it is perfectly safe to continue breastfeeding. While nursing can cause mild uterine contractions due to the release of oxytocin, these are generally not strong enough to trigger preterm labor in a healthy pregnancy. However, if you have a history of preterm labor, are expecting multiples, or have been advised to avoid sexual intercourse, you should discuss breastfeeding with your healthcare provider. Our pregnancy and breastfeeding guide covers this in more detail.

Will nursing my toddler take nutrients away from the new baby?

Your body is designed to prioritize the developing fetus first, the nursing child second, and your own nutritional stores last. As long as you are eating a balanced, calorie-dense diet and staying hydrated, your unborn baby will get the nutrients they need. It is important to focus on your own nutrition to ensure you don't become depleted or anemic.

Can I use power pumping to get my supply back up to pre-pregnancy levels?

During pregnancy, your milk supply is primarily governed by hormones rather than the "supply and demand" of milk removal. While pumping can help maintain the supply you currently have, it is unlikely to return your volume to pre-pregnancy levels until after the baby is born. Most parents see a natural increase in supply a few days after delivery once pregnancy hormones drop.

Will there be enough colostrum for my newborn if my toddler is still nursing?

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How to Increase Milk Supply While Pregnant and Breastfeeding

Table of Contents

Introduction

The Reality of Milk Supply During Pregnancy

Can You Increase Supply While Pregnant?

Why Traditional Methods May Feel Different